Method of polishing and buffing metal articles



H. C. HART.

METHOD OF POLISHING AND-.BUFFING METAL ARTICLES. APPLICATION FILED AUG-5v 1919.

1,352,598. PatentedSept. 14,1920.

Qvwem r01 worm m at rest and in placed in mass HUBERT C. HART, OF UNIONVILLE, CONNECTICUT.

' manner or POLISHING am) BUFFING METAL ARTICLES.

Specification of Letters Patent, Pate t d S t 14 1920 Application filed August 5, 1919.- Serial No. 315,419.

To all whom it may concern:

Be it known that I, Hunnn'r C. HART, a citizen of the United States,

residing at Unionville, in the county of Hartford and- State of Connecticut, have invented certain new and useful Improvements in Methods of Polishing and Bufiing Metal Articles, of which the following is a specification.

This invention relates to a method of polishing and buffing. A methodinvolving the invention can be employed with advantage in connection with many different kinds of articles. The present procedure involved in buifing and polishing an article is more or less laborious and tune-requiring.- I have evolved a method by which I can concurrently polish and bufi a large number of articles, and as I have determined, can do so in a more thorough and effective manner than is possible bv hand. While as I intimate the method is capable of general application, I have nevertheless found it particularly well adapted to the polishing and buffing of parts such as are found on typewriting, adding and like machines. In the following description I will disclose one way of several involving my invention, of carrying the method of said invention. into effect. course I am not restricted to this disclosure. I may depart therefrom in several particulars within the scope of the invention expressed by the claim following saiddescrlption.

In the accompanying drawings I have shown this particular way of carrying said method into effect. In these drawlngs Figures 1 and 2 show a cross section and assumed to be respectively motion.

Ordinarily I use in the method a receptacle or container which is given a movement'to obtain the requisite agitation. I have found that what is known asa tumbling barrel 2 answers my requirements in this particular, this article being in fact in ordinary every day use in foundries and factories of various kinds.

The articles to be polished and buffed are or in the aggregate in such a receiver or, container and are subjected to agitation while therein. This agitation may be of course accomplished by a matter of facility it is; deslrably brought about mechanically as by the agency of a skin scraps 5 or its tumbling barrel in I can accomplish in five hand but assuitable motor acting through belt gearing denoted in a general way by 3.

I place in the barrel with the articles, steel balls, chamois-skin scra s and powdered rags or their equivalents. hese powdered rags are desirably ground or are in small pieces or particles and their action on the articles being tumbled is to take the dirt off the same; in other words the ground rags clean the articles while the chamois polishes and buffs them. In addition to the chamois, balls, and powdered rags, I utilize suitable polishing materials such as rouge and whiting. The chamois as will be clear polishes and bufi's the articles after they have been effectually cleaned by the powdered rags, the polishing materials aiding in the action. I subject the barrel and its contents to a moving or vibrating action of practically five hours.- I find that I can accomplish about twenty times the output through the method that is possible by hand operation. Not only this but the articles are more thoroughly polished and buffed than is possible by hand.

In carrying the method into effect, I first into the barrel and then a layer of chamoisequivalent and then a layer of different kinds of metal or other material 5 which is to be polished and buffed, and then I put in a layer of powdered rags 6 or something analogous and con- .tinue to make these layers until the barrel is I have subjected the method to rigorous practice and find thereby that I can actually, accomplish almost thirty times as much by my method as is posible by the present hand proceedings. I might also. add that the method has received especial favor in the field of typewritermanufacturing where I hours an unusually larger amount of work than can be obtained through the efforts of five men, in one half the time. The tumbling barrel of whatever 3 .form it may be is desirably lined with wood put practicallv fifty pounds of steel balls 4 or something of a similar soft nature by dry condition andsubjecting the mixture to which the metal articles therein Will not be movement against a surface which is softer injured when subjected to -agitation or mothan that of the balls.

tion. Desirably the mass is put 'into the In testimony whereof I ailix my signature 5 tumbling barrel While in a'dry condition. in the presence of tWo Witnesses.

A method of polishing and bufiing articles, which comprises placing the articles 'in VVitnesses': a mass of metal balls, togetherwith chamois .ELsIE M. RABENSTEIN,

10 skin scraps and a polishing powder all in a HEATH SUTHERLAND. 

